Articulated arm convenient to disassemble and assemble

Abstract

The utility model relates to the technical field of articulated arms, in particular to an articulated arm convenient to disassemble and assemble, which comprises a first articulated arm, a movable groove is arranged on one side of the first articulated arm, a connecting groove is arranged on the rear side of the inner wall of the movable groove, and a connecting hole corresponding to the position of the connecting groove is arranged on the front side of the first articulated arm. And the connecting hole communicates with the interior of the movable groove, and a shaft rod is movably inserted into the first joint arm through the connecting groove and the connecting hole. According to the articulated arm convenient to disassemble and assemble, through cooperative use of the first articulated arm body, the second articulated arm body, the movable groove, the connecting groove, the connecting hole, a positioning rod, a shaft rod, a positioning hole, a pull ring, a hidden groove, a pull rope, a limiting cavity, a spring, a sliding block, a limiting hole, a guide column and a mounting block, the connecting structure between the first articulated arm body and the second articulated arm body is simple and convenient to design; therefore, the linkage of the whole quick release mechanism can be realized. By means of the design, the connecting, disassembling and assembling processes are very efficient.

Description

Technical Field

[0001] This utility model relates to the field of articulated arm technology, specifically to an articulated arm that is easy to assemble and disassemble. Background Technology

[0002] In modern manufacturing and automation, articulated robots are widely used due to their flexibility and high efficiency. With technological advancements, easily detachable articulated arms have become an important trend. This design not only improves the maintainability and upgradeability of robots but also significantly enhances their adaptability to different working environments.

[0003] Chinese Patent No. CN216067528U discloses a robotic arm joint connection structure that is easy to disassemble and replace. It includes a first arm and a second arm, with a connecting mechanism installed on opposite sides of the first and second arms. This utility model, through its fixing mechanism, utilizes a fixing cover connected to a threaded sleeve to effectively fix the position of the shaft. A swing arm, under the action of a return spring, allows the locking block to engage with the locking slot, preventing accidental rotation of the fixing cover under external force, thus effectively fixing the fixing cover, ensuring the limiting effect on the shaft, and facilitating disassembly and assembly.

[0004] Regarding the aforementioned technologies, the current fixing methods between the shaft and the first arm have significant shortcomings in practical use. The current fixing method requires connection through multiple threaded rods and threaded sleeves, making disassembly and assembly cumbersome and time-consuming, as specialized tools must be used to rotate each threaded rod individually. This complex operation not only increases labor intensity but can also lead to inefficiency due to unsuitable tools or improper operation. Furthermore, while a split structure is used to facilitate shaft disassembly and assembly, this significantly impacts the structural strength of the shaft. Although the split design provides convenience, it makes the shaft connection a potential weak point, thus reducing its long-term stability and durability. Therefore, it is necessary to provide a more easily disassembled articulated arm to solve the above-mentioned technical problems. Utility Model Content

[0005] The purpose of this invention is to provide an articulated arm that is easy to assemble and disassemble, so as to solve the problems mentioned in the background art.

[0006] To achieve the above objectives, this utility model provides the following technical solution:

[0007] An articulated arm that is easy to assemble and disassemble includes:

[0008] A first articulated arm has a movable groove on one side and a connecting groove on the rear side of the inner wall of the movable groove. A connecting hole corresponding to the position of the connecting groove is opened on the front of the first articulated arm, and the connecting hole is connected to the interior of the movable groove. A shaft is movably inserted into the first articulated arm through the connecting groove and the connecting hole. A second articulated arm is provided on the first articulated arm through the shaft and the movable groove. The second articulated arm has an installation hole adapted to the shaft. A limiting cavity is provided inside the first articulated arm on one side of the connecting hole, and a slider is slidably installed inside the limiting cavity.

[0009] The limiting cavity has symmetrically distributed mounting blocks fixedly installed on the side away from the connecting hole. Each of the two mounting blocks is fixedly connected to the slider with a spring. An operating mechanism is provided on the side of the slider close to the spring, and symmetrically distributed positioning rods are fixedly installed on the side of the slider away from the spring.

[0010] Both sides of the inner wall of the connecting hole are provided with limiting holes corresponding to the position and number of the positioning rods, and the limiting holes are connected to the interior of the limiting cavity. The positioning rods are slidably connected to the limiting holes. The outer wall of the front end of the shaft is provided with symmetrically distributed positioning holes, and the positioning holes are slidably inserted into the positioning rods.

[0011] Preferably, the front of the first articulated arm is provided with a threaded hole on the other side of the connecting hole, and the threaded groove is connected to the interior of both limiting holes. The first articulated arm is threadedly connected to a positioning bolt through the threaded groove. Threaded holes are provided on the outer wall of the two positioning rods at the end away from the slider, and the threaded holes are threadedly connected to the positioning bolts.

[0012] Preferably, the operating mechanism includes a pull rope, one end of which is fixedly installed on the side of the slider near the spring. A guide post is fixedly installed inside the limiting cavity on the side away from the connecting hole. A hidden groove corresponding to the position of the guide post is opened on the front of the first joint arm. The other end of the pull rope passes through the outer wall of the guide post and extends through the inner wall of the limiting cavity to the inside of the hidden groove. A pull ring is fixedly installed on the other end of the pull rope.

[0013] Preferably, the front of the first articulated arm has an opening corresponding to the position of the limiting cavity, and a cover plate is provided on the opening, and the cover plate is fixedly connected to the first articulated arm by bolts.

[0014] Preferably, a plurality of positioning blocks are fixedly installed inside the connecting groove, and a positioning groove corresponding to the position and number of the positioning blocks is opened on the outer wall of the rear end of the shaft, and the positioning groove is engaged with the positioning block.

[0015] Preferably, the back of the first articulated arm is provided with a fixing hole corresponding to the position of the connecting groove, and the fixing hole is connected to the interior of the connecting groove.

[0016] Compared with the prior art, the beneficial effects of this utility model are:

[0017] 1. This utility model utilizes the combined use of a first joint arm, a second joint arm, a movable groove, a connecting groove, a connecting hole, a positioning rod, a shaft, a positioning hole, a pull ring, a hidden groove, a pull rope, a limiting cavity, a spring, a slider, a limiting hole, a guide post, and a mounting block. The connection structure between the first and second joint arms is designed to be simple, and the entire quick-release mechanism can be activated by pulling the pull ring. This design makes the connection and disassembly process highly efficient: pulling the pull ring causes the slider to move within the limiting cavity, compressing the spring and causing the positioning rod to exit the connecting hole. Then, the shaft can be inserted into the connecting groove and connecting hole. Finally, by releasing the pull ring, the elasticity of the spring causes the slider to return to its original position, and the positioning rod re-enters the positioning hole of the shaft, achieving a stable connection. This operation method makes the disassembly and assembly between the first and second joint arms quick and convenient. Furthermore, the integrated design of the shaft enhances the overall structural stability and long-term reliability.

[0018] 2. This utility model utilizes the combined use of a positioning bolt, a threaded groove, and a threaded hole. When the positioning rod is engaged with the limiting shaft, the positioning bolt can be screwed into the threaded groove and connected to the threaded hole on the positioning rod to further lock the position of the positioning rod and enhance the limiting stability. This operation involves only one positioning bolt, which improves the connection firmness without affecting the convenience of the quick-release structure, greatly improving practicality. Attached Figure Description

[0019] Figure 1 This is a schematic diagram of the structure of this utility model.

[0020] Figure 2 This is a top sectional view of the present invention.

[0021] Figure 3 For the present utility model Figure 2 Enlarged structural diagram at point A in the middle.

[0022] Figure 4 For the present utility model Figure 2 Enlarged structural diagram at point B.

[0023] In the diagram: 1. First articulated arm; 2. Second articulated arm; 3. Movable groove; 4. Connecting groove; 5. Positioning block; 6. Connecting hole; 7. Positioning bolt; 8. Positioning rod; 9. Positioning groove; 10. Shaft; 11. Positioning hole; 12. Cover plate; 13. Pull ring; 14. Hidden groove; 15. Fixing hole; 16. Pull rope; 17. Limiting cavity; 18. Spring; 19. Slider; 20. Limiting hole; 21. Guide post; 22. Opening; 23. Mounting block; 24. Threaded groove; 25. Threaded hole. Detailed Implementation

[0024] To make the technical means, creative features, objectives and effects of this utility model easier to understand, the present utility model will be further described below in conjunction with specific embodiments.

[0025] In the description of this utility model, it should be noted that the terms "upper," "lower," "inner," "outer," "front end," "rear end," "both ends," "one end," and "the other end," etc., indicate the orientation or positional relationship based on the orientation or positional relationship shown in the accompanying drawings. They are used only for the convenience of describing this utility model and simplifying the description, and do not indicate or imply that the device or element referred to must have a specific orientation, or be constructed and operated in a specific orientation. Therefore, they should not be construed as limitations on this utility model. In addition, the terms "first" and "second" are used for descriptive purposes only and should not be construed as indicating or implying relative importance.

[0026] In the description of this utility model, it should be noted that, unless otherwise explicitly specified and limited, the terms "installed," "equipped with," and "connected," etc., should be interpreted broadly. For example, "connected" can be a fixed connection, a detachable connection, or an integral connection; it can be a mechanical connection or an electrical connection; it can be a direct connection or an indirect connection through an intermediate medium; it can be a connection within two components. Those skilled in the art can understand the specific meaning of the above terms in this utility model based on the specific circumstances.

[0027] The technical solutions of the present utility model will be clearly and completely described below with reference to the accompanying drawings of the embodiments. Obviously, the described embodiments are only some embodiments of the present utility model, and not all embodiments. Based on the embodiments of the present utility model, all other embodiments obtained by those of ordinary skill in the art without creative effort are within the protection scope of the present utility model.

[0028] Please see Figures 1-4 One embodiment provided by this utility model:

[0029] An articulated arm that is easy to assemble and disassemble includes:

[0030] The first articulated arm 1 has a movable groove 3 on one side and a connecting groove 4 on the rear side of the inner wall of the movable groove 3. The first articulated arm 1 has a connecting hole 6 on the front corresponding to the position of the connecting groove 4 and the connecting hole 6 is connected to the interior of the movable groove 3. The first articulated arm 1 is movably connected to the shaft 10 through the connecting groove 4 and the connecting hole 6. The first articulated arm 1 is provided with a second articulated arm 2 through the shaft 10 and the movable groove 3. The second articulated arm 2 has an installation hole adapted to the shaft 10. The interior of the first articulated arm 1 is provided with a limiting cavity 17 on one side of the connecting hole 6. A slider 19 is slidably installed inside the limiting cavity 17.

[0031] A symmetrically distributed mounting block 23 is fixedly installed on the side of the limiting cavity 17 away from the connecting hole 6. A spring 18 is fixedly connected between each of the two mounting blocks 23 and the slider 19. An operating mechanism is provided on the side of the slider 19 close to the spring 18. A symmetrically distributed positioning rod 8 is fixedly installed on the side of the slider 19 away from the spring 18.

[0032] Both sides of the inner wall of the connecting hole 6 are provided with limiting holes 20 corresponding to the position and number of the positioning rods 8, and the limiting holes 20 are connected to the interior of the limiting cavity 17. The positioning rods 8 are slidably connected to the limiting holes 20. The outer wall of the front end of the shaft 10 is provided with symmetrically distributed positioning holes 11, and the positioning holes 11 are slidably inserted into the positioning rods 8.

[0033] The front of the first articulated arm 1 is provided with a threaded hole 25 on the other side of the connecting hole 6, and the threaded groove 24 is connected to the interior of the two limiting holes 20. The first articulated arm 1 is threadedly connected to the positioning bolt 7 through the threaded groove 24. The outer wall of the two positioning rods 8 away from the slider 19 is provided with a threaded hole 25, and the threaded hole 25 is threadedly connected to the positioning bolt 7.

[0034] In one embodiment, the operating mechanism includes a pull rope 16, one end of which is fixedly installed on the side of the slider 19 near the spring 18. A guide post 21 is fixedly installed inside the limiting cavity 17 on the side away from the connecting hole 6. A hidden groove 14 corresponding to the position of the guide post 21 is opened on the front of the first joint arm 1. The other end of the pull rope 16 passes through the outer wall of the guide post 21 and extends through the inner wall of the limiting cavity 17 to the inside of the hidden groove 14. A pull ring 13 is fixedly installed on the other end of the pull rope 16, which realizes the quick operation of the position of the positioning rod 8.

[0035] In one preferred embodiment, the front of the first articulated arm 1 is provided with an opening 22 corresponding to the position of the limiting cavity 17. A cover plate 12 is provided on the opening 22, and the cover plate 12 is fixedly connected to the first articulated arm 1 by bolts. By disassembling the cover plate 12, it is convenient for the staff to inspect and maintain the mechanical structure inside the limiting cavity 17 through the opening 22.

[0036] In one embodiment, a plurality of positioning blocks 5 are fixedly installed inside the connecting groove 4, and a positioning groove 9 corresponding to the position and number of positioning blocks 5 is provided on the outer wall of the rear end of the shaft 10. The positioning groove 9 is engaged with the positioning block 5, and the positioning block 5 can further limit the shaft 10, thereby further improving the stability of the shaft 10 after installation.

[0037] In one preferred embodiment, a fixing hole 15 corresponding to the position of the connecting groove 4 is provided on the back of the first articulated arm 1, and the fixing hole 15 is connected to the interior of the connecting groove 4. During the disassembly of the shaft 10, a rod-shaped tool can be inserted into the interior of the connecting groove 4 through the fixing hole 15 to push the shaft 10 out, which facilitates the disassembly of the shaft 10.

[0038] The working principle of this utility model is as follows: All parts not mentioned in this device are the same as or can be implemented using existing technology. When installing the first joint arm 1 and the second joint arm 2, first insert one end of the second joint arm 2 into the movable groove 3 on the first joint arm 1, and align the mounting hole at one end of the second joint arm 2 with the connecting groove 4 and connecting hole 6 on the inner wall of the movable groove 3. Simultaneously, pull the pull rope 16 through the pull ring 13, causing the pull rope 16 to move the slider 19 inside the limiting cavity 17. The movement of the slider 19 will compress the spring 18, and the movement of the slider 19 will also cause the positioning rod 8 to move out of the connecting hole 6. Then, insert the shaft 10 through the connecting hole 6, so that the shaft 10 passes through the second joint arm 2 and is inserted into the connecting groove 4. At the same time, release the limiting force on the pull ring 13, and the spring 18... The elastic action of the slider 19 causes it to reset, and the slider 19 drives the positioning rod 8 to insert into the positioning hole 11 on the shaft 10, firmly fixing the shaft 10 at the connection between the first joint arm 1 and the second joint arm 2. At the same time, the installation between the first joint arm 1 and the second joint arm 2 is completed. When disassembling, the pull ring 13 is pulled in the same way to release the positioning rod 8 from the limit of the shaft 10. Then the shaft 10 is pulled out from the inside of the connecting groove 4 and the connecting hole 6, and the disassembly of the second joint arm 2 is completed. The connection structure between the first joint arm 1 and the second joint arm 2 is simple. The entire quick-release structure can be linked by pulling the pull ring 13, which is convenient to operate and realizes the quick assembly and disassembly between the first joint arm 1 and the second joint arm 2. Moreover, the shaft 10 adopts an integral structure to ensure stability and reliability in subsequent use.

[0039] During the process of locking and limiting the shaft 10 by the positioning rod 8, the positioning bolt 7 can be screwed into the threaded groove 24. When the positioning bolt 7 is screwed into the threaded groove 24, it will directly form a threaded connection with the threaded hole 25 on the positioning rod 8, which can further lock the position of the positioning rod 8 and ensure the stability of the positioning rod 8 and the positioning hole 11 on the shaft 10. Moreover, for the entire articulated arm connection structure, only one positioning bolt 7 needs to be disassembled and assembled with tools. While improving the firmness of the articulated arm connection, it will not have too much impact on the quick-release structure operation of the articulated arm, and has extremely high practicality.

[0040] The foregoing has shown and described the basic principles, main features, and advantages of this utility model. Those skilled in the art should understand that this utility model is not limited to the above embodiments. The embodiments and descriptions in the specification are merely preferred examples and are not intended to limit the utility model. Various changes and modifications can be made to this utility model without departing from its spirit and scope, and all such changes and modifications fall within the scope of the claimed utility model. The scope of protection of this utility model is defined by the appended claims and their equivalents.

Claims

1. A joint arm that is easy to assemble and disassemble, characterized in that, It includes: A first articulated arm (1) has a movable groove (3) on one side and a connecting groove (4) on the rear side of the inner wall of the movable groove (3). A connecting hole (6) corresponding to the position of the connecting groove (4) is opened on the front of the first articulated arm (1), and the connecting hole (6) is connected to the interior of the movable groove (3). A shaft (10) is movably inserted into the first articulated arm (1) through the connecting groove (4) and the connecting hole (6). A second articulated arm (2) is provided on the first articulated arm (1) through the shaft (10) and the movable groove (3). An installation hole adapted to the shaft (10) is opened on the second articulated arm (2). A limiting cavity (17) is provided inside the first articulated arm (1) on one side of the connecting hole (6). A slider (19) is slidably installed inside the limiting cavity (17). The limiting cavity (17) has symmetrically distributed mounting blocks (23) fixedly installed on the side away from the connecting hole (6). Both mounting blocks (23) are fixedly connected to the slider (19) with springs (18). The slider (19) is provided with an operating mechanism on the side close to the spring (18). The slider (19) is fixedly installed with symmetrically distributed positioning rods (8) on the side away from the spring (18). Both sides of the inner wall of the connecting hole (6) are provided with limiting holes (20) corresponding to the position and number of the positioning rod (8), and the limiting holes (20) are connected to the interior of the limiting cavity (17). The positioning rod (8) is slidably connected to the limiting hole (20). The outer wall of the front end of the shaft (10) is provided with symmetrically distributed positioning holes (11), and the positioning holes (11) are slidably inserted into the positioning rod (8).

2. The articulated arm that is easy to assemble and disassemble according to claim 1, characterized in that: The first articulated arm (1) has a threaded hole (25) on the front side opposite to the connecting hole (6), and the threaded groove (24) is connected to the interior of the two limiting holes (20). The first articulated arm (1) is threadedly connected to the positioning bolt (7) through the threaded groove (24). The outer wall of the two positioning rods (8) away from the slider (19) has a threaded hole (25), and the threaded hole (25) is threadedly connected to the positioning bolt (7).

3. The articulated arm that is easy to assemble and disassemble according to claim 1, characterized in that: The operating mechanism includes a pull rope (16), one end of which is fixedly installed on the side of the slider (19) near the spring (18). A guide post (21) is fixedly installed inside the limiting cavity (17) on the side away from the connecting hole (6). A hidden groove (14) corresponding to the position of the guide post (21) is opened on the front of the first joint arm (1). The other end of the pull rope (16) passes through the outer wall of the guide post (21) and extends through the inner wall of the limiting cavity (17) to the inside of the hidden groove (14). A pull ring (13) is fixedly installed on the other end of the pull rope (16).

4. The articulated arm that is easy to assemble and disassemble according to claim 1, characterized in that: The front of the first articulated arm (1) has an opening (22) corresponding to the position of the limiting cavity (17), and a cover plate (12) is provided on the opening (22), and the cover plate (12) is fixedly connected to the first articulated arm (1) by bolts.

5. The articulated arm that is easy to assemble and disassemble according to claim 1, characterized in that: Several positioning blocks (5) are fixedly installed inside the connecting groove (4). The outer wall of the rear end of the shaft (10) is provided with positioning grooves (9) corresponding to the position and number of positioning blocks (5), and the positioning grooves (9) are engaged with the positioning blocks (5).

6. The articulated arm for easy assembly and disassembly according to claim 1, characterized in that: The back of the first articulated arm (1) is provided with a fixing hole (15) corresponding to the position of the connecting groove (4), and the fixing hole (15) is connected to the interior of the connecting groove (4).

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